Isotek is a wholly owned subsidiary of Isabellenhütte Heusler GmbH KG, located in Dillenburg, Germany. Formed in 1989, Isotek is a leading supplier of precision current sensing and high power resistors, thermo electric and resistance alloys, and precision measurement systems. Located in Swansea MA, Isotek has developed an industry wide reputation for providing high quality products and unparalleled customer support. Backed by hundreds of decades of manufacturing and engineering expertise and a representative network that spans all of North America, Mexico and Brazil our mission is to provide superior resistive solutions into the automotive, industrial and aerospace industries.